Who invented the volt meter?

Many people have invented different types of voltmeters. The most famous inventor is Lord Kelvin, who invented the multicellular voltmeter. W.E. Ayrton also invented a similar type of voltmeter. Ca...
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What is a good volt ohm meter?

On One Hand: Extech Offers Quality And AffordabilityVolt-ohm meters, or "multimeters," come in a variety of brands and have prices ranging from $10 to $250. Adafruit Industries notes that many sour...
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